TY - JOUR
A2 - Radicella, Sandro M.
AU - Maltseva, Olga
AU - Mozhaeva, Natalia
PY - 2016
DA - 2016/10/24
TI - The Use of the Total Electron Content Measured by Navigation Satellites to Estimate Ionospheric Conditions
SP - 7016208
VL - 2016
AB - Measurements of delays of the signals radiated by transmitters of navigational satellites allow us to obtain the total electron content (TEC). In addition, measurements of TEC allow solving problems such as development of local, regional, and global models of TEC and correction of ionospheric delay for increasing accuracy of positioning. Now, it is possible to set the task of calculation of critical frequency foF2 with the use of experimental values of TEC in a global scale. For this purpose it is necessary to know an equivalent slab thickness of the ionosphere τ which is a coefficient of proportionality between TEC and a maximum density of the ionosphere. The present paper is devoted to the analysis of investigation and utilization of this parameter. It is shown that (1) existing models of τ are not empirical and not always can provide an adequate accuracy of foF2 calculation, (2) experimental median τ(med) provides much larger accuracy of foF2 calculation than the empirical model and variations from day to day and allows filling gaps in the ionosonde data, and (3) it is possible to use a hyperbolic approximation and coefficient K(τ) for development of a global model of τ.
SN - 1687-5990
UR - https://doi.org/10.1155/2016/7016208
DO - 10.1155/2016/7016208
JF - International Journal of Navigation and Observation
PB - Hindawi Publishing Corporation
KW -
ER -